World War I

Question:

Answer:

Many nations had treaties to help each other out in case of war.
Example: Serbia and Russia had a secret treaty. If someone attacked
either, the other would step in and help. Austria wanted to punish Serbia
because of the assassination of Francis Ferdinand, heir to the Austrian
throne, by a Serbian national. Austria attacked Serbia. Serbia called on
Russia. Russia responded by attacking Austria. If Austria had known about
the secret treaty, they may have decided not to attack Serbia. Other
countries lined up on one side or the other, in large part based on their
secret treaties. Soon, over 30 countries were involved, and the world was
at war. Secret Treaties and
World War I